Isaac cook



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.TO ALL WHOM IT MAY CON CERN:

Bc it kno-wn that I, ISAAC COOK, o' the city and county of Philadelphia,and State of Pennsylvania, have invented a new and usefulMilking-Machine; and I do hereby declare that the following is a full,clear, and exact description of the same, reference being had to theaccompanying drawing, and'to the letters of reference marked thereon. ll

My invention consists in exhausting the air from the pail or `bucketinto which milk is received as it is milked from the cow, and in givinga raising and lowering motion to the tcat-cups, and in the formation ofthe teat-cups, as is hereinafter shown and described. thisspecification- Figure' 1 is a side elevation,

Figure Ean end elevation, p

Figure 3 aplan view of the arrangement Aof the teat-cups, and

Figure 4 a. sectional elevation of the teatcup.`

i Similar letters refer to similar parts in the several views. v l

A is a vessel, answering the purposes both of a receiver, from which airis to be exhausted, and a bucket or pail, for containing milk as it ismilked-from a cow. B is an air-pump, set upright on thc said receiver orbucket. C is a lever, which is hinged to thc link D, vibrating on theprojection a of the curved arm E, xcd to the bucket. The air-pumppiston-rod F passes through and is'attached to the lever C in an openingin it, and is guided by the boss b on the end of theV curved arm E. G isa pedestal xed to the bucket A, at right angles, or nearly so,'to thelever C. H is a vertical rod, which passes through-a correspondingopening in the end of the pedestal G. I is a' hollow cap, fixed to theupper end of the rod H. e e e c'arehollow tubes, radiz ating from thesaid cap I. They terminate each in a short, hollow cylinder, d, to whichthe teat-cups K are 4fired. L is'a lever, whose fulcrum is atA M, on theprojection Gr` One end of is forked to embrace the rod The other end ofitis connected by the rod Oto the lever C. P is an- H or theadjusting-collar N on it. elastic tubecommunicating respectively withthe cap I and the receiver A. The length of it must be sufficient toallow of the teat-cups being adjusted to any height. The weight of therod H, its appointments, and the 'tent-cups, is carried by the lever L,whose forked end takes, into the groove in the adjusting-collar N. e e ee ,are stop-cocks, in the several hollow cylinders l d d d,respectivelyt They are for discontinuing the operation of the machine onone ormore of the tea'ts, while it is continued on the rest., f is astop-cock in the hollow head or cap I, into which thegpipes c c c c fromthe cylinders dal d al converge. It is fordiscontinuingthe oper=ation'of the` machine on all the teats at one and the same time, in casethe cow be restless, or from any other causes.

The bucket or receiver A is placed beneath the cow, the same as anordinary milk-bucket, the teat-cups mmediatelyl'beneath the teats. Theset-screw g on the collar N is theulloosened, and the rod H raised untilthe tents take, each, into its respective teat-cup. The set-screw gisthen tightened, securing its collar to the rod Then the cock H at thebottom of the bucket A is closed, and the cocks e e e e on the cylindersd ul dd opened, as is also the main cockf. vibrate the lever C, and theairpump B gradually exhausts the air from the bucket or receiver A, andthrough vthe medium of the elastic tube P, thc cap I, radial tubes c c cc, cylinders d, and the teat-'cups K, are also gradaA llyexhaustedoftheir air, which exhaustion of the air causes the tent-cups to ft theteats air-tight. The rod H, by means of the rod O and .the lever L,alternately raises and lowers with the piston of the air-pump,

which facilitates the operation of milking, and is similar to thestripping of a cow by a calf while sucking, or I to the pulling of theteatsby a milk-maid. As the air is gradually exhausted from thereceiver, ete., the milk Bows from each teat into the teat-cups, andthrough thepipes e into thel head I; thence through the elastic tube Pinto the receiver or bucket A, from which it can be drawn bythe cock 7L.The falorum M on the projec= tion G- should be adjustable in thedirection of the lengthof the lever L, to regulate the lift ofthe-teat-cups for free o r hard-milking cows.

The teat-cupsK are constructed, as shown in hg. 4, with tapering ends,orbecorne gradually smaller in diameter towards their upper ends, whichthinness of the upper ends enables them to )it the roug'hcst tcats, and

On reference to thc accompanying drawing, making part of A also tocollapse sideways, thereby giving them a, side pressure. The taper, asshown, is formed on the outside of the teat-cups,hut can be eitherinside or loutside.

What I claim as my invention, and desire to secure hy Letters Patent, isl 1. An air-pump so combined with a milking-machine that the milk willbe drawn into the receiver or bucket without passing into or through thesaid pump.

2. Giving a. raising and lowering motion to the tent-cups, whilemilking, substantially for the purpose shown.

3. A stop-cock so combined with u cow-millier, and so arranged relativeto the tent-cups that the operation of milking may be discontinued onall the tents :1t one and the same time. i

4. Bevelling or`thinning the upper ends of the tent-cups, either insideor outside, as -shown and described4 In testimony whereof, I hereuntosign my nemeA te this specification in presence of two subscrihingwitnesses.

ISAAC COOK.

Witnesses:

FRANCIS D. PAsronIUs, W. W. DoUenER'rY.

